classic waka stream

芦北の野坂の浦ゆ船出して
水島に行かむ波立つなゆめ
Roma-ji

Ashikita no Nosaka no ura yu funade shite Mizushima ni yukamu nami tatsu na yume

English Translation
From Ashikita,
from the bay of Nosaka,
setting out by boat,
to Mizushima I will go—
waves, do not rise, not at all!
Meaning
Setting out by boat from the bay of Nosaka in Ashikita, I will go to Mizushima—waves, never rise!
Commentary
Book Three Miscellaneous Poems 246

Headnote continued from the preceding poem: "Two poems by Prince Nagata when, dispatched to Tsukushi, he crossed to Mizushima"
Paired with the preceding poem, this too was composed on the way to Mizushima. About to set sail from the bay of Nosaka in Ashikita toward the sacred island, the prince commands the waves never to rise. His prayer for a safe voyage is carried by the force of the command. In the next poem, Master Ishikawa responds to this final line.
The poet, Prince Nagata, was a royal of the early Nara period who served as Governor of Ōmi and Master of Settsu, among other posts, and died in Tenpyō 9 (737).

First line "From Ashikita": Ashikita was a district of Higo, around present-day Ashikita, Kumamoto.
Second line "from the bay of Nosaka": Nosaka is thought to be a bay on the Ashikita coast. Yu is an old particle meaning "from" or "by way of."
Third line "setting out by boat" simply describes the departure.
Fourth line "to Mizushima I will go": mu expresses resolve, and the sentence breaks here. The line has one syllable too many.
Fifth line "waves, do not rise": na is a prohibitive particle and yume means "never." Addressed to the waves, it prays for a safe passage, and the last line of the next poem answers it.
Author
Prince Nagata
Source
Manyoshu
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